690060749 has 4 divisors (see below), whose sum is σ = 788640864. Its totient is φ = 591480636.

The previous prime is 690060673. The next prime is 690060769. The reversal of 690060749 is 947060096.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 690060749 - 2⁸ = 690060493 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690060769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49290047 + ... + 49290060.

It is an arithmetic number, because the mean of its divisors is an integer number (197160216).

Almost surely, 2^690060749 is an apocalyptic number.

It is an amenable number.

690060749 is a deficient number, since it is larger than the sum of its proper divisors (98580115).

690060749 is an equidigital number, since it uses as much as digits as its factorization.

690060749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98580114.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 690060749 is about 26269.0073851297. The cubic root of 690060749 is about 883.6815244231.

The spelling of 690060749 in words is "six hundred ninety million, sixty thousand, seven hundred forty-nine".